<template>
	<el-container class="home-container">
		<!-- 头部 -->
		<el-header>
			<div>
				<img src="~assets/logo.png" alt="">
				<span>电商后台管理系统</span>
			</div>
			<!-- 退出 -->
			<el-button type="info" @click="loginout">退出</el-button>
		</el-header>
		<!-- 整体区域 -->
		<el-container>
			<!-- 侧边栏 -->
			<el-aside :width="isCollapse ? '64px' : '200px'">
				<div class="toggle-button" @click="toggleBtn">|||</div>
				<!-- 菜单栏 -->
				    <el-menu
				      background-color="#333744"
				      text-color="#fff"
				      active-text-color="#409EFF"
							unique-opened
							 :collapse="isCollapse"
							 :collapse-transition="false"
							 router
							:default-active="activePath">
							<!-- 一级菜单 -->
				      <el-submenu 
								:index="item.id + ''" 
								v-for="item in menuList"
								:key='item.id'>
				        <template slot="title">
									<!-- 图标 -->
				          <i :class="iconList[item.id]"></i>
									<!-- 文本 -->
				          <span>{{item.authName}}</span>
				        </template>
				        <!-- 二级菜单 -->
				       <el-menu-item 
									:index="'/' + subItem.path" 
									v-for="subItem in item.children" 
									:key="subItem.id"
									@click="saveNavState('/' + subItem.path)">
								 <template slot="title">
									 <!-- 图标 -->
								   <i class="el-icon-menu"></i>
									 <!-- 文本 -->
								   <span>{{ subItem.authName }}</span>
								 </template>
							 </el-menu-item>
				      </el-submenu>
				    </el-menu>
			</el-aside>
			<!-- 右侧内容区域 -->
			<el-main>
				<router-view></router-view>
			</el-main>
		</el-container>
	</el-container>
</template>

<script>
export default {
	name: 'Home',
	data(){
		return {
			//左侧菜单数据
			menuList:[],
			iconList:{
				'125':'el-icon-s-custom',
				'103':'el-icon-s-tools',
				'101':'el-icon-s-cooperation',
				'102':'el-icon-s-order',
				'145':'el-icon-s-marketing'
			},
			//是否折叠
			isCollapse:false,
			//保存给激活的链接状态
			activePath:''
		}
	},
	created() {
		this.getMenuList();
		//获取保存链接的激活状态
		this.activePath = window.sessionStorage.getItem('activePath')
	},
	methods: {
		loginout() {
			//首先清空token
			window.sessionStorage.clear();
			//通过路由跳转到登录页面
			this.$router.push('/login');
		},
		//获取菜单
		async getMenuList(){
			 const { data:res }  = await this.$http.get('menus')
			 if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
			 this.menuList = res.data
			console.log(res)
		},
		//点击侧边栏展开与收起
		toggleBtn(){
			this.isCollapse = !this.isCollapse
		},
		//保存链接的激活状态
		saveNavState(activePath){
			window.sessionStorage.setItem('activePath',activePath)
			this.activePath = activePath;
		}
	}
};
</script>

<style scoped="scoped" lang="less">
.home-container{
	height: 100%;
}
.el-header {
	background-color: #373d41;
	display:flex;
	justify-content: space-between;
	align-items: center;
	color:#fff;
	font-size:20px;
	> div {
		display:flex;
		align-items:center;
		img {
			width: 40px;
			height: 40px;
		}
		span{
			margin-left: 15px;
		}
	}
	
}
.el-aside {
	background-color: #333744;
	.el-menu{
		border:0
	}
}
.el-main {
	background-color: #eaedf1;
}

.toggle-button{
	background-color: #4a5064;
	font-size: 10px;
	line-height: 24px;
	color: #fff;
	text-align: center;
	letter-spacing: 0.2em;
	cursor: pointer;
}
</style>
